English abstract

This paper analyses the different positioning strategies according to their ability to obtain an optimum recall level. The analysed positioning strategies are the search
for terms in the title, in the url, in the links, or in the Meta and Head tags. Our analysis is restricted to non-commercial pages –commercial pages are avoided because of their policies for achieving greater popularity by means of web optimisation-. The specificity level of the query is taken into account. We submitted thirty queries to four search engines (AskJeeves, Google, YahooSearch, and MSN); then we judged by hand the relevance of the first twenty hits of each query. Our analysis yields the following findings: the utility
of the title strategy; the need for analysing the data by function of the type of query; and the suitability of designing new retrieval measurements. These measurements should take into consideration the relevant documents without the strategy, as well as those non-relevant documents with it.